So it sounds like your saying that some of the newer tilesets like Medieval City tileset and Mountains and more tilesets would be better to use then the standard ones when it comes to loading and gaps. While Shadooow was saying some of the larger newer tilesets load slower then the standard NWN tilesets.
I have downloaded a lot of tilesets and was checking load times. The larger ones like DOA City Rural and Worms SF did look nice but they also loaded a whole lot slower. However the newer tilesets that wasn't as bulky like Medieval City tileset and Mountains and more tilesets loaded just as quick as the standard NWN tilesets. Plus I did see some of the gaping Zwerkules was talking about in the older and standard NWN tilesets. However I didn't see any (not saying there isn't any) in Medieval City tileset and Mountains and more tilesets.
I have also found that some haks do not play well together. So it seems that I will need to keep playing around with all the different tilesets to see which one load slower, looks poorer, and works well with each other to find the ones that would be best to use.
I all so can see Shadooow and Proleric's point when it comes to not wanting to add more haks to their current modules/PW's and the fact that a lot of the newer tilesets have a total different look then the old ones so they don't look right when in the same module.
You have all given me a lot to think about and pointed some things to look for.
I'm still open to any information, pointers, or nice tilesets to use if anyone has any for me.
Thanks for all of your time and insight
Tonden Ockay